八年前，從小一起長(zhǎng)大的阿齊（黃宗澤 飾）、阿貓（張繼聰 飾）和金仔（陳家樂 飾）三兄弟拜入龍頭佑哥（黃德斌 飾）門下，佑哥對(duì)三人照顧有加。誰料，佑哥勢(shì)頭如日中天時(shí)遭刀手伏擊，風(fēng)云人物一朝淪為殘廢。佑哥出事后，阿齊為了社團(tuán)忍辱負(fù)重；阿貓隱姓埋名，只想和妻子阿悅（衛(wèi)詩雅 飾）做回普通人；金仔為了上位，不惜暗中助對(duì)家公司老板出頭。而一心想要為夫報(bào)仇的佑嫂（周勵(lì)淇 飾）查出，佑哥當(dāng)年出事似與三兄弟其一有關(guān)。在情義與利益交織的漩渦中，曾經(jīng)生死與共的三人將如何抉擇各自的命運(yùn)？他們的決定，又會(huì)觸發(fā)怎樣的結(jié)局呢？

A group of diverse individuals are suddenly taken from their homes and flown via helicopter to a futuristic bomb shelter in the desert, one-third of a mile below the surface of the Earth. There, they learn that a nuclear holocaust is taking place and that they've been "chosen" by computer to survive in the shelter in order to continue the human race. The shelter is designed to ...